Grammar: dump&http://www.aliyun.com/zixun/aggregation/37954.html ">NBSP;" [-CNU] [-0123456789] [B < block size] [Number of B < blocks] [-D < density] [F < equipment name] [H < level] [-s < tape length] [-t < date] [Directory or file system] or dump [-WW]
Supplemental Note: Dump is a backup utility that backs up directories or entire file systems to a designated device, or backs up a large file. Parameters: -0123456789 levels of backup. -b< Chunk Size > Specifies the size of the block in kilobytes. Number of-b< blocks > Specifies the number of blocks for the backup volume. -C modifies the density and capacity of the backup tape preset. -d< density > Set the density of the tape. The unit is a BPI. -f< Device name > Specify backup device. -h< level > When the backup level equals or rains the specified level, the file marked "Nodump" by the user is not backed up. -Ñ notifies users in all "operator" groups when a backup operation requires administrator intervention. -s< tape length > Backup tape length, in feet. -t< Date > Specifies the time and date when the backup starts. -U after backup, record the backup file system, hierarchy, date and time in/etc/dumpdates. -W is similar to-W, but only displays files that need to be backed up. -W Displays the level, time, and date of the file that needs to be backed up and its last backup.
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